Dynamo-electric machine.



J. F. CURTIS.

DYNAMO ELECTRIC MACHINE.

APPLICATION FILED mnzs. I914.

1,278,865. PdientedSept. 17,1918;

WITNESSES: I I INVENT R,

@ i l M A TTONEY UNITED STATES PATENT OFFICE.

JAMES F. CURTIS, OF PITCAIRN, PENNSYLVANIA, ASSIGNOR TO WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, ACORIORATION OF PENNSYLVANIA.

DYNAMO-ELECTRIC MACHINE.

Specification of Letters Patent. Patented Sept. 17, 1918.

Application filed April 25, 1914. Serial No. 834,343.

To all whom it may concern:

Be it known that I, JAMES F. CURTIS, a citizen of the United States, and a resident of Pitcairn, R. F. D. No. 1, in the county of IVestmoreland and State of Pennsylvania, have invented a new and useful Improvement in Dynamo-Electric Machines, of which the following is a specification.

My invention relates to dynamo-electric machines and it has special reference to cer-.

. being either individually attached to the outer surface of the rotors or being secured to annular bands, which, in turn, were at-.

tached to the rotor bodies; also, separate wiper rings were disposed aroundthe ma-' chine shaft for the purpose of expelling any excess oil or other lubricating material from the shaft bearing andaway from the machine windings, during operation.

According to my invention, I provide an integrally combined wiper ring and set of fan blades for the rotorsof dynamo-electric machines, thereby effecting economies in cost of manufacturing and in the space required in the machine. Other advantages will be hereinafter pointed out.

The single figure of the accompanying drawing is a sectional view of a portion of a dynamo-electric machine constructed in accordance with my invention.

Referring to the drawing, the structurev here shown comprises a stator frame 1 of any usual construction having an end housing 2 within which is disposed a bearing 3 for rotatably supporting the machine shaft rotor windings are provided with the usual overhanging end portions 5 and a shield member 6 which is bent at substantially right angles around the unprotected surfaces of the end portions 5. A set of fan blades 7 and a wiper ring 8 are integrally combined with an annular ring 9, which is disposed around the machine shaft 3" intermediate the inner end of the bearing 3 and 'for the purpose of conducting anyexcess of lubricating material from the shaft '3 to the outer circular pointed rim 13 of the Wiper ring. A'hooked circular projection 14 is preferably integrally secured to the housing 2 in proximity to the wiper ring 8 for the purpose of forming therewith a chamber 15 for the purpose of gathering and conducting away, in a suitable manner, the material that is thrown off the rim 13.

Inasmuch as the individual functions of both the sets of fan blades 7 and the wiper ring 8 are familiar to those skilled in the art,

no further description of their operation is deemed necessary. F

I do not wish to be restricted to the specific structural details herein set forth, but desire that only such limitations shall be imposed as are indicated in the appended claims.

I claim as my invention: I 1. In a dynamo-electric machine, the combination with a rotor provided with a at table shaft and a lubricated bearing for said shaft, of a plurality of fan blades secured to one end of said rotor for directing a cooling current of air through certain portions thereof, and an annular member secured to said fan blades in spaced relation and surrounding'the adjacent portion of said bearing for centrifugally expelling excess lubrieating material away from the shaft.

2. In a dynamo-electric machine, the combinatlon with a rotor provided with a rotatable shaft and a lubricated bearing for said 3 upon which is disposed the rotor 4. The shaft, of a plurality of fan blades secured to one end of said rotor for directing a cooling current of air through certain portions thereof, and an oil-throwing ring integral ing ring and set of fan blades disposed around the shaft and surrounding the adjacent portion of said bearing.

4. The combination with a rotatable member, a lubricated bearing for said member and a bearing housing provided with an annular flange spaced from and surrounding said bearing of a fan carried by said shaft and provided with an annular member 10- 10 cated Within said flange for centrifugally expelling excess from said shaft.

In testimony whereof I have hereunto sgbicribed my name this 18th day of April, 1 l

lubricating material away JAMES F. CURTIS. Witnesses:

EDWIN TIDLUND,

B. B. HINES. 

